CAJ | 학술논문

针对不平衡电网条件下的双馈风力发电系统( DFIG)高性能控制问题，提出一种滑模变结构直接功率控制方法( SMC-DPC)。对不平衡电网条件下两相静止坐标下DFIG转子侧变换器进行了数学建模。其次，对电网电压不平衡对变换器运行有功、无功功率的影响进行了分析；分别以获得正弦对称电网电流、消除定子无功100 Hz波动以及消除定子有功100 Hz波动为目标，提出3种给定功率指令补偿的滑模直接功率控制方法。基于55 kW的DFIG风力发电系统试验平台验证了SMC-DPC方法的可行性和优越性，并给出了与传统直接功率控制( DPC)在电网不平衡条件下的详细对比分析。
침대불평형전망조건하적쌍궤풍력발전계통( DFIG)고성능공제문제，제출일충활모변결구직접공솔공제방법( SMC-DPC)。대불평형전망조건하량상정지좌표하DFIG전자측변환기진행료수학건모。기차，대전망전압불평형대변환기운행유공、무공공솔적영향진행료분석；분별이획득정현대칭전망전류、소제정자무공100 Hz파동이급소제정자유공100 Hz파동위목표，제출3충급정공솔지령보상적활모직접공솔공제방법。기우55 kW적DFIG풍력발전계통시험평태험증료SMC-DPC방법적가행성화우월성，병급출료여전통직접공솔공제( DPC)재전망불평형조건하적상세대비분석。
Under the condition of unbalanced power grid of doubly-fed wind power generation system ( DFIG) high-performance control, a direct power of sliding mode variable structure control method ( SMC-DPC ) was proposed. On unbalance grid conditions, two-phase still coordinates network side transform device for has mathematics built die;second, on grid voltage unbalance on transform device run of effects has analysis;respectively to obtained sine symmetric grid current, and elimination stator no work 100 Hz fluctuations and elimination stator active 100 Hz fluctuations for target, three species given power instruction compensation of sliding die directly power control method was proposed. Finally, DFIG wind turbine system experimental platform based on 55 kW verified the feasibility and advantages of SMC-DPC methods, direct power control with traditional ( DPC) in a detailed comparative analysis of power system under unbalanced conditions was giver.